Sync RTA

Author: protectionsmachine

rta/linux_command_and_control_curl_wget_hidden_directory_output.py

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+# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+# or more contributor license agreements. Licensed under the Elastic License
+# 2.0; you may not use this file except in compliance with the Elastic License
+# 2.0.
+
+import sys
+from . import RtaMetadata, common
+
+metadata = RtaMetadata(
+    uuid="b3c8c616-15a5-45fd-970a-c44c18e59578",
+    platforms=["linux"],
+    endpoint=[
+        {
+            "rule_name": "File Downloaded via Curl or Wget to Hidden Directory",
+            "rule_id": "dc1cee03-4923-4c6b-b00b-8a5c323bb753",
+        },
+    ],
+    techniques=["T1564"],
+)
+
+
+@common.requires_os(*metadata.platforms)
+def main() -> None:
+    common.log("Creating a fake executable..")
+    masquerade = "/tmp/curl"
+
+    source = common.get_path("bin", "linux.ditto_and_spawn")
+    common.copy_file(source, masquerade)
+    common.log("Granting execute permissions...")
+    common.execute(["chmod", "+x", masquerade])
+
+    commands = [masquerade, "--output", "/dev/shm/evil"]
+    common.execute([*commands], timeout=5, kill=True)
+    common.log("Cleaning...")
+    common.remove_file(masquerade)
+    common.log("Simulation successfull!")
+
+
+if __name__ == "__main__":
+    sys.exit(main())